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首页> 外文期刊>Scandinavian journal of medicine & science in sports. >Patellar and hamstring autografts are associated with different jump task loading asymmetries after ACL reconstruction
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Patellar and hamstring autografts are associated with different jump task loading asymmetries after ACL reconstruction

机译：髌骨和腿筋自动移植物与ACL重建后的不同跳跃任务加载不对称相关联

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Abstract After anterior cruciate ligament reconstruction (ACLR), there is a higher re‐injury rate to the contralateral limb in athletes who undergo surgery using a bone‐patellar‐tendon‐bone (BPTB) autograft than using a semitendinosus and gracilis hamstring tendon (HT) autograft. This may be influenced by differing lower‐limb loading asymmetries present when athletes of each graft type return to play (RTP). The aim of this study was to compare bilateral countermovement jump (CMJ) phase‐specific impulse asymmetries between athletes with BPTB and HT autografts 9?months post‐ACLR, and to identify the relationship between impulse and isokinetic strength asymmetries. Male field sport athletes with a BPTB (n?=?22) or HT (n?=?22) autograft were tested approximately 9?months post‐ACLR. An uninjured control group (n?=?22) was also tested on a single occasion. Phase‐specific bilateral absolute impulse asymmetries were calculated during the CMJ and compared between groups using Kruskal‐Wallis and post‐hoc testing. A linear regression model was used to assess the relationship between impulse asymmetries and isokinetic concentric knee extensor strength asymmetries. BPTB athletes demonstrated greater impulse asymmetries than HT athletes during the eccentric ( P?=? 0.01) and concentric ( P?=? 0.008) phases of the jump. Isokinetic strength asymmetry was a significant predictor of CMJ concentric impulse asymmetry in both BPTB ( r 2 ?=?0.39) and HT athletes ( r 2 ?=?0.18) but not eccentric impulse asymmetry in any group. The greater loading asymmetries demonstrated by BPTB than HT athletes 9?months after ACLR may contribute to the differing incidence rates of contralateral ACL injury. The findings suggest that graft‐specific loading asymmetries should be targeted during rehabilitation prior to RTP.
机译：摘要在前令韧带重建（ACLR）后，对对侧肢体的运动员中的对侧肢体较高，使用骨头髌茎 - 肌腱 - 骨骼（BPTB）自体移植，而不是使用Mevitendinosus和Gracilis Hamstring Tenton（HT ）自动移植。当每个接枝型返回播放（RTP）的运动员时，这可能会受到不同的低肢载荷不对称的影响。本研究的目的是将双边对策跳跃（CMJ）相位特异性脉冲不对称与BPTB和HT自体移植物9？持续时间的脉冲率9？矩，并识别脉冲和等异细胞的关系。男性场地运动运动员与BPTB（n？=？22）或ht（n？=Δ22）自动移植到ACLR后约9？月。在一次机会上还测试了未获性的对照组（N？=？22）。在CMJ期间计算相特异性的双侧绝对脉冲不对称，并使用Kruskal-Wallis和Hoc测试之间的组进行比较。线性回归模型用于评估脉冲不对称与等内同心膝延伸强度不对称之间的关系。 BPTB运动员在偏心（P？= 0.01）和跳跃的同心（P？= 0.008）阶段，展示了比HT运动员更大的冲动不对称。等动力不对称是BPTB（R 2？= 0.39）和HT运动员（R 2？= 0.18）的CMJ同心脉冲不对称的显着预测因子，但在任何组中没有偏心脉冲不对称。 BPTB的载荷不对称超过HT运动员9？ACLR的数月可能有助于对侧ACL损伤的不同发病率。研究结果表明，在RTP之前，应在康复期间针对接枝的载荷不对称。

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